BIOD 101 MODULE 1 EXAM WITH
CORRECT QUESTIONS AND ANSWERS
2025
What is matter, and what states can it exist in? - CORRECT ANSWERS>>>>Matter is anything
that takes up space by having volume and mass. It can exist in solid, liquid, or gaseous states.
Explain the difference between essential and trace elements. - CORRECT
ANSWERS>>>>Essential elements are required for human life. Trace elements are required only
in small quantities.
Ionic bond - CORRECT ANSWERS>>>>Generated based on the attraction between two
oppositely charged particles
Covalent bond - CORRECT ANSWERS>>>>Occurs when electrons are shared by two atoms to
create the valence shells of both
Hydrogen bond - CORRECT ANSWERS>>>>Forms a relatively weak bond that is easily broken
Anions - CORRECT ANSWERS>>>>Negatively charged ions
Cations - CORRECT ANSWERS>>>>Positively charged ions
, What organic compounds make up biomacromolecules - CORRECT
ANSWERS>>>>Carbohydrates, lipids, proteins, nucleic acids
What are carbohydrates - CORRECT ANSWERS>>>>commonly referred to as sugars; primary
source of fuel for organisms and have the same three elements in their main structure (C, H, O)
Why are lipids unique among biomacromolecules - CORRECT ANSWERS>>>>Most are insoluble
in water. They are not monomers, but are assembled from smaller molecules that are
chemically linked together.
Why are lipids insoluble in water - CORRECT ANSWERS>>>>They are made of mostly non-polar
hydrocarbon chains. Water can only dissolve other polar or ionically bonded substances.
Describe the structure of a phospholipid - CORRECT ANSWERS>>>>They contain two main
components: a polar head joined to a non-polar tail. The head group is attracted to polar
substances and is hydrophilic. The tail group repels water and is hydrophobic.
7 functions of proteins - CORRECT ANSWERS>>>>act as enzymes and regulate metabolic
functions, store amino acids, act as hormones, form antibodies for immunological defense, act
as carriers for transport and also from membrane channels, form cell surface receptors to
receive chemical messages, and act as structural molecules for support and movement
CORRECT QUESTIONS AND ANSWERS
2025
What is matter, and what states can it exist in? - CORRECT ANSWERS>>>>Matter is anything
that takes up space by having volume and mass. It can exist in solid, liquid, or gaseous states.
Explain the difference between essential and trace elements. - CORRECT
ANSWERS>>>>Essential elements are required for human life. Trace elements are required only
in small quantities.
Ionic bond - CORRECT ANSWERS>>>>Generated based on the attraction between two
oppositely charged particles
Covalent bond - CORRECT ANSWERS>>>>Occurs when electrons are shared by two atoms to
create the valence shells of both
Hydrogen bond - CORRECT ANSWERS>>>>Forms a relatively weak bond that is easily broken
Anions - CORRECT ANSWERS>>>>Negatively charged ions
Cations - CORRECT ANSWERS>>>>Positively charged ions
, What organic compounds make up biomacromolecules - CORRECT
ANSWERS>>>>Carbohydrates, lipids, proteins, nucleic acids
What are carbohydrates - CORRECT ANSWERS>>>>commonly referred to as sugars; primary
source of fuel for organisms and have the same three elements in their main structure (C, H, O)
Why are lipids unique among biomacromolecules - CORRECT ANSWERS>>>>Most are insoluble
in water. They are not monomers, but are assembled from smaller molecules that are
chemically linked together.
Why are lipids insoluble in water - CORRECT ANSWERS>>>>They are made of mostly non-polar
hydrocarbon chains. Water can only dissolve other polar or ionically bonded substances.
Describe the structure of a phospholipid - CORRECT ANSWERS>>>>They contain two main
components: a polar head joined to a non-polar tail. The head group is attracted to polar
substances and is hydrophilic. The tail group repels water and is hydrophobic.
7 functions of proteins - CORRECT ANSWERS>>>>act as enzymes and regulate metabolic
functions, store amino acids, act as hormones, form antibodies for immunological defense, act
as carriers for transport and also from membrane channels, form cell surface receptors to
receive chemical messages, and act as structural molecules for support and movement
